post-it note and postdated check?

I wrote a rent check dated on the fifth of the month, but attached a post-it note to it asking my landlord to not cash it until the 9th. We have done this before, as he has said its okay if we’re running a little late on rent, he just wanted to have a check in his hands. Fine. But the other day, we apparently angered him, and now he’s trying to get back at us by saying because the check had a post-it note attached, it make it a postdated check, thereby making rent late and charging a late fee.

From what I’ve read so far, a postdated check has to have something physically written on the check for it to be postdated In this case, the post-it note will be detached when it is going to be cashed. Am I right?

Please only answer if you know what you’re talking about

The attached post it note, does not make the check post dated.
He could have ignored your note and deposited the check anyhow.

A post dated check is a check you write today, July 9th, but date it for July 12th.

He is being a hard nose, ask him what is up with that!